apt(8): Wait for frontend and cache lock

This is a rework of !6 with additional stuff for the frontend
lock, so we can lock the frontend lock and then keep looping
over dpkg lock.

1 files changed, 1 insertions, 1 deletions

diff --git a/apt-pkg/edsp/edspsystem.cc b/apt-pkg/edsp/edspsystem.cc
index 47f5e06d5..c86f1ed3f 100644
--- a/apt-pkg/edsp/edspsystem.cc
+++ b/apt-pkg/edsp/edspsystem.cc
@@ -39,7 +39,7 @@ eippSystem::eippSystem() : edspLikeSystem("Debian APT planner interface")
 }
 									/*}}}*/
 // System::Lock - Get the lock						/*{{{*/
-bool edspLikeSystem::Lock()
+bool edspLikeSystem::Lock(OpProgress *)
 {
    return true;
 }